Suspending device for electric lamps



(No Model.)

J.,J. RENEHAN. SU$PENDING DEV'IGE FOR-ELECTRIC LAMPS.

' No. 469,048. Patented Feb. 1 ,1392.

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UNIT D STATES ATENT OFFIC JAMES J. RENEHAN, OF NEXV BRITAIN,CONNECTICUT.

SUSPENDING DEVICE FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 469,048, dated February16, 1892. Application filed January 80, 1888. Renewed January 27, 1890.Serial No. 338,219. (No model.)

To all whom, it may concern.-

Be it known that 1, JAMES J. RENEHAN, of New Britain, in the county ofHartford and State of Connecticut, have invented new Improvements inSuspending Devices for Electric Lamps; and I do hereby declare thefollowing, when taken in connection with accompanying drawings and theletters of reference marked thereon, to be a full, clear, and exactdescription of the same, and which said drawings constitute part of thisspecification, and represent, in-

Figure 1, a side View of the supporting device complete; Fig. 2, a sideView showing a portion of the post and arm with the operative mechanismat the junction of the arm and post enlarged; Fig. 3, a section throughthe pulley D and the idler; Fig. 4, a side View of the outer end of thearm, showing the shoe and saddle enlarged; Fig. 4, a section on line aa: of Fig. 4; Fig. 5, a modification of the shoe and saddle; Fig. 6, amodification showing the band as running outside the arm.

This invention relates to a suspending device for street electric lampsand such as are of a crane-like character, whereby the lamp is suspendedat a considerable distance from the post. In the more generalconstruction of this class of suspending devices the lamp is so hungthat is brought near the earth for trimming. This is often inconvenientbecause of passing vehicles.

The object of my invention is the construction of a device whereby thelamp may be moved close to the supporting-post without substantiallychanging its level; and it consists in combining with the supporting-arma pulleyat its outer end and a corresponding pulley near the post fromwhich the arm projects, an endless band running around the said twopulleys with means for imparting rotation to the pulley near the post,and a suspending device on the lower run of the said band to receive thelamp, and whereby under the rotation of the pulley the movement of theband-will carry the lamp suspended to and from the post, as more fullyhereinafter described. I

A represents the usual post for supporting the lamp, carrying an arm.

B represents the arm, which is made tubuar and is sustained by the postby suitable the other run I) being directly below the said tubular arm.To the pulley D asuitable crank d is applied, so that the said pulleymay be rotatedby turning the crank.

Upon the lower run I) of the band a suspending-hook e is secured, whichcarries the lamp E. If the pulleyD be turned in one direction, it willdraw the lamp to the post, as indicated in broken lines, Fig. 1. Then'if turned in the opposite direction it will return the lamp to theposition at the end of the arm. As the band is necessarily flexible, itis desirable to support thelamp when at its place of rest more firmlythan it could be done if left simply suspended upon the band. To thisend the hook e is attached to or made a part of a shoe f, which shoe ismade fast to the endless band, and at the outer end of the arm a saddleg is provided. This saddle is bifurcated, so that the shank of thesuspending-hook may pass between the-two parts and the shoe ride ontothe said two parts, as seen in Figs. 1 and 4. WVhen in that position,the lamp is supported by the saddle independent of the band. The onlyoffice of the band, therefore, is to draw the lamp from the sad dletoward the post and return it again to that position.

Instead of bifurcating the saddle as I have described, so that the shankof the hook will run between the two parts, this order may be reversedand the shank of the hook bifurcated, as seen in Fig. 5, the saddleforming a single arm, onto which the shoe will ride, the saddleextending through the shank of the hook.

To maintain the proper tension of the end less band, an idler-pulley Fis hung in arms G G on each side of the crank-arbor, and, as seen inFigs. 2 and 3, this idler is therefore adapted to swing on the axle ofthe pulleyD as its cen ter of motion, andthe pulleyF is in the plane ofthe band,so that the lower run of the band will pass over saididler-pulley F. The pulley D and the idler are each provided with aspurgear, as represented in Fig. 2, whereby the rotation of the pulleyDis communicated to the idler. The arms G are provided with one or moreadjusting-screws H, by which the idlerpulley may be moved toward or fromits run of the band, as may be required, in order to produce the desiredtension.

\Vhen it is desired to reach the lamp for trimming or other purposes,the trimmer mounts the post A in the usual manner and then turns thecrank 01, imparting a movement to the endless band and so that the lampwill be drawn to the post, as represented in broken lines, Fig. l, andafter adjustment the crank is given a rotation in the oppositeedirectionand the lamp returned. As it returns to its place of rest the shoepasses onto the saddle and there rests, supporting the lamp.

While I prefer to make the arm 13 tubular, so that the upper run of theband will pass through it, the band may run outside-that is, below thearm, as represented in Fig. 6.

I claim- 1. In an electric-lampsupporting device, the combination of thepost A, arm B, projecting therefrom, a pulley O at the outer-end of thesaid arm and a similar pulley D at the inner or post end of the arm, anendless band around said pulleys, a shoe f, fixed to said band andcarrying the lamp-suspending device, a saddle g at the outer end of thearm, upon which said shoe may rest, and means, substantially such asdescribed, for imparting rotation to said pulley D, substantially as andfor the purpose described.

2. The combination of the post A, tubular arm 13, supported by saidpost, pulley O at the outer end of said tubular arm, correspondingpulley D at the inner end of said tubular arm, an endless band aroundsaid two pulleys, one run a of which passes through said tubular arm, asaddle g at the outer end of said arm, shoe f, fixed to the lower run I)of the band and carrying the lamp-suspending device, the said shoeadapted to seat upon said saddle, with means, substantially such asdescribed, for imparting rotation to said pulley D, substantially as andfor the purpose described.

3. The combination of the postA, arm B,

supported by said post, pulley O at the outer end of said arm,corresponding pulley D at the inner end of said arm, an endless bandrunning around said two pulleys, a lamp-suspending device 6, fixed tothe lower run of said band, means, substantially such as described, forimparting rotation to said pulley D,and an idler F, hung upon the axisof said pulley D and over which the lower run of the band passes, withan adjusting-screw H for said idler, substantially as and for thepurpose described. I

' JAMES J. RENEHAN.

Witnesses:

JAMES ROCHE,

CHARLES EKLAND.

